Fetching last sales of dopplers not working

Hey, I want to get last sales of an item. It doesnt seem to work for dopplers of specific phases. Am I doing it incorrectly? It works for anything other than dopplers. Thanks.

Works: https://csgoempire.com/api/v2/trading/item/market/sales?name=%E2%98%85%20Hand%20Wraps%20%7C%20Desert%20Shamagh%20(Battle-Scarred)

Doesnt work: https://csgoempire.com/api/v2/trading/item/market/sales?name=%E2%98%85%20Karambit%20|%20Doppler%20(Factory%20New)%20-%20Phase%202